Sync Canon 6D and Tascam DR70D with just one Tentacle?

It is possible to sync Canon 6D (has a timecode option https://www.youtube.com/watch?v=fobBqNPFOYs) and Tascam DR70D with just one Tentacle and two cables for Canon 6d and Tascam DR70D? First I sync the Tentacle with my 6D and then connect the Tentacle to a track #4 of my DR70D… Right? Or do I absolutely need two Tentacle units?